Photoelectric Fluid Switch | LED Light Source | NPN Output Signal | IP67 & IP69 Rated | by SICK
The Photoelectric Fluid Switch is designed for precise fluid level detection and monitoring in industrial processes. Featuring a visible red LED light source with a 650 nm wavelength and an NPN output signal, this switch operates effectively within a process pressure range of -0.5 bar to 20 bar. Built for durability with stainless steel housing and an IP67/IP69 rating, it’s perfect for automation systems in harsh environments.
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Alternatively Known As: Photoelectric Fluid Switch, LED Fluid Level Sensor, Red Light Photoelectric Switch
Technical Specifications
- Medium: Fluids
- Measurement: Switch
- Light source: LED
- Type of light: Visible red light
- Wavelength: 650 nm
- Process pressure: -0.5 bar to 20 bar
- Process temperature: -10 °C to +55 °C
- MTTFD (mean time to dangerous failure): 2,304 years
- Response time: 10 ms
- MTBF: 1,178 years
- Supply voltage: 10 V DC to 30 V DC
- Residual ripple: ≤ 5 V pp
- Power consumption: ≤ 30 mA at 24 V DC without output load
- Protection class: III
- Connection type: M12 round connector, 4-pin
- Output signal: 1 x NPN
- Switching mode: Normally Open (NO)
- Output current: ≤ 100 mA, overcurrent and short-circuit protected
- Switching frequency: 250 Hz
- Enclosure rating: IP67, IP69
- Wetted parts: Stainless steel 1.4404 / 316L, Polysulfon FPM
- Process connection: G ½
- Housing material: Stainless steel 1.4404 / 316L
- Ambient operating temperature: -10 °C to +55 °C
- Ambient storage temperature: -25 °C to +70 °C
- Dimensions (H x L x W): 80mm x 30mm x 30mm
- Weight: 0.3 kg
Key Features
- Visible red LED light source with 650 nm wavelength
- Switch measurement type with NPN output signal
- Process pressure range from -0.5 bar to 20 bar
- Process temperature range from -10 °C to +55 °C
- High protection rating IP67 and IP69 for harsh environments
- Stainless steel 1.4404 / 316L housing and wetted parts
- Fast response time of 10 ms
- Output overcurrent and short-circuit protected
- Switching frequency up to 250 Hz
Professional Installation Requirements
- Installation should be performed by a qualified technician familiar with electrical and fluid process systems to ensure proper connection and compliance with safety standards.
Applications
- Fluid level detection and monitoring in industrial processes
- Automation systems requiring reliable switch measurement
- Use in environments with process pressures from -0.5 bar to 20 bar
Standards & Compliance
- AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
- Durable stainless steel construction reduces waste and extends product life
- Low power consumption of ≤30 mA at 24 V DC reduces energy usage
- Complies with China RoHS for hazardous substance restrictions
Warranty Information
Standard manufacturer warranty applies; please refer to SICK for detailed warranty terms.
Available Now
The SICK GRF18S-E234LV Photoelectric Switch is available for immediate purchase, ideal for industrial fluid measurement and automation applications.
